Dumitru Alexe (21 March 1935 – 17 May 1971) was a Romanian sprint canoeist, who had his best achievements in doubles, partnering with Simion Ismailciuc.
They won an Olympic gold medal in 1956, a European title in 1957 and a world title in 1958.
At the 1960 Olympics Dunitru competed with Igor Lipalit and placed fourth.